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How to Configure Screen Resolution for GPU

Question asked by schwine on Dec 16, 2015
Latest reply on Dec 17, 2015 by amdmatt

I have an Early 2009 Mac Pro Desktop computer with a AMD Radeon Sapphire HD 7950 GPU.

The recommended resolution for my monitor (LG  34" ultrawide) is 3440x1080.

The Sapphire GPU has a maximum screen resolution of 3840x2160.

 

However, after installing the GPU the maximum resolution listed in the System Preferences > Display window is 2650x1080.

So the question is how can I configure the GPU to access the desired 3440x1080 screen resolution?

 

Does this GPU require the installation of drivers by any chance, as I have not done this.

Thanks for any tips.

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